<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <script>
    var longestDecomposition = function (text) {
    let count = 0;
    let start = 0;
    for (let i = 1; i <= text.length; i++) {
        if (match(start, i)) {
            count++;
            start = i;
        }
    }
    return count;

    function match(start, end) {
        for (let i = start, j = text.length - end; i < end; i++, j++) {
            if (text[i] != text[j]) return false;    
        }
        return true;
    }
};
console.log(longestDecomposition('merchant'));
  </script>
</body>
</html>